From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from H.M. Hobson Ltd. regarding the conversion and calibration of jet sizes for AVT.64.B. carburetters.
| Identifier | ExFiles\Box 42\3\ Scan040 | |
| Date | 15th November 1926 | |
| CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY AND TO THE DOMINION & FOREIGN GOVERNMENTS. PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM, NOT TO INDIVIDUALS. TELEPHONE: VICTORIA 4670. (4 LINES.) TELEGRAMS: 'ASSEMBLAGE, LONDON.' MANUFACTURERS OF:- Claudel-Hobson Carburettors, AND MOTOR ACCESSORIES. LONDON AND WORKS: WOLVERHAMPTON. H.M. HOBSON, LTD. 29 & 31, VAUXHALL BRIDGE ROAD, LONDON, S.W.1. 15th November, 1926. OUR REF. AJC/AML For the attention of Mr. J.{Mr Johnson W.M.} Whitehead. Messrs. Rolls Royce Limited, Coventry. Dear Sirs, With further reference to your telegram of the 13th inst., giving sizes of choke and jets for the AVT.64.B. carburetters. With regard to the jets, we presume the 98/1000" refers to the main, and the 39/1000" to the pilots. As our nearest equivalents to these are 2.5 m/m and the .95 m/m respectively, we propose to drill the jets out to these sizes and calibrate them according to the flow capacity, of which we will advise you later. Yours faithfully, H.{Arthur M. Hanbury - Head Complaints} M.{Mr Moon / Mr Moore} HOBSON, LTD., H.{Arthur M. Hanbury - Head Complaints} T. Thump Sales Manager. [STAMP: RECEIVED 17 NOV 1926] | ||